There can be no greatest common denominator. If you have a set a numbers whose least common denominator is L then 2*L, 3*L, … are all common denominators. There is no end to that sequence and so no greatest.
1008
126
The greatest common denominator of any set of integers is infinite.
720 is.
A common denominator is 72.
The lowest common multiple, or lowest common denominator, of 18 and 28 is 252.
A common denominator, though not the least one, is 14*49 = 686.
The common denominator is 28.
The greatest common denominator is infinite.
A common denominator, though not the least, is 168.
A common denominator, though not the least one, is 14*12 = 168.
The common denominator of any two or more whole numbers, such as 18 14 7 and 8, will always be one (1) because 'common denominator' refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
20 and 14 are both integers. The common denominator of 20/1 and 14/1 is 1. The least common multiple is 140.
A common denominator, though not the least, is 5616.
18
If that's 8 and 1/8 and 16 and 1/4, the LCD is 8.